Mounting for whip rolls



July 9, 1940. v PAYNE 2,207,106

MOUNTING FOR WHIP ROLLS Filed June 17, 1939 3 Sheets-Sheet 1 FIG. 1

INVENTOR OSCAR V PAYNE Ar TO RN EY July 9, 1940. o. v. PAYNE MOUNTINGFOR WHIP ROLLS Filed June 17, 1939 5 Sheets-Sheet 2 FIG. j

INVENTOR OscAR V PAYNE ATTORNEY July 9, 1940. o. v. PAYNE 2,207,105

MOUNTING FOR WHIP ROLLS Fil ed June 17, 1939 s Sheets-Sheet 5 FIE. 4

4-6 w l 7 95 i 97 96 I INVENTOR I OscARVPAYNE ATTORNEY Patented July 9,1940 UNITED STATES MOUNTING'IFOR WHIP ROLLS Oscar V. Payne, Leicester,Mass, assignor to Crompton &- Knowles Loom Works, ,Worcester, Mass, acorporation of Massachusetts Application June 1'7, 1939, Serial No.279,712

'15 Claims. (01. 139-114 This invention relates to improvements in themounting for whip rolls more particularly on wide looms and it is animportant object of the invention to provide a mounting for a whip rollwhich will render it responsive to small variations in warp tension. 7

In wide looms of the type employed for the weaving of such fabrics asfelt it has heretofore been customary'to mount the whip roll instationary bearings and employ a type of let-off which depends in no wayfor its operation upon movement of the whip roll. Such let-offshave notbeen entirely satisfactory. since the whip roll has not been able tomove either forwardly to accommodate temporary high warp tension orrearwardly to absorb any excess warp which may have been released by thelet-off. In the let-off shown in my prior Patent No. 2,184,059, issuedDecember 19, 1939 I have shown a let-oif which operates satisfactorilyto maintain uniform warp tension, and in which the whip roll is movablein response to warp tension demands. As used up to the present time thewhip roll has been short enough to be supported at its ends only. Inwide looms, however, it is necessary to support the whip roll at one ormore points intermediate its ends, and it is an important object of mypresent invention to provide means by which a long whip roll can be usedin connection with a let-off motion of the type shown in the aforesaidpatent application.

Looms of the type to which my invention more particularly applies havewarp beams of large diameter, and this necessitates the location ofthe'whip roll very close to the beam heads and the yarns of a full beam.As a result of this relation there is very little space between. thewhip roll and the full beam and I have found it necessary to support thelatter for movement on some form of mounting which occupies very little\space vertically. To accomplish this result I have used a pair ofhorizontal links pivoted together, one link being supported by a fixedpart of the loom while the other link is connected to the whip roll. Thehorizontal motion of the whip roll thus provided makes it possible forme to use horizontally swinging levers having force transmittingrelation with the whip roll. By using the links to be set forth indetail hereinafter I find that a whip roll thirty feet or more in lengthcan be moved with a very small force.

In order to provide for horizontal motion of the ends of the whiproll Imay use the links already described, but in actual practice have foundit desirable to employ roller bearings which are held in a fixed carrieron the loom frame and receive the down pressure of a shoe supporting thewhip roll. By this construction the whip roll can be moved backand forthin the loom by the application of very light forces. While'I have shownthe link suspension-of the intermediate parts of the whip roll and theroller bearings for the ends thereof, I do not wish necessarily to belimited to this arrangement and I wish it to be understood'that eitherform of suspension can'be used 0 throughout the length of the whip roll.

In order to provide an efiicient and cheap form of roller bearingI'employ a chain thecross bars of which carry rollers. The links of thechain project above and below the rollers tolbe in contacting relationwith roller engaging flanges, one on the fixed support and-the other onthe shoe. In this way the side links" of the chain are utilized to limitendwise motion of the whip roll, and the fact that the links arepivotedion each othert makes is possible for the rollers toadaptthemselves to any irregularities which may'exist in the engagingsurface of the flanges above and below the rollers.

In the preferred form of the invention I use ai12 series ofbellcranklevers which are operated by a transverse rod connected to thelet-off, and these levers act on the whip roll at spaced points duringthe operation of the loom. In a'modified form of my invention Ieliminate the levers and "130 connect the transverse rod directly .tothe rings. This latter construction not only eliminates the levers butalso provides an equalizer by which the amount of motion of the links ofeach pair is the same, thus insuring a parallel back and forth2 motionof the whip roll.

With these and other objects in view which will appear as thedescription proceeds,.my invention resides in the combination andarrangement of parts hereinafter described and set forth, :4

In the accompanying drawings wherein two forms of the invention areshown,

Fig. l is a plan view of the rear part of a loom showing myinventionapplied thereto,

Fig. 2 is an enlarged vertical section on line 2-2 of Fig. 1,

Fig. 3 is an enlarged side elevation, parts being in section, taken inthe direction of arrow 3,

Fig. .1,

Fig. 4 is a vertical section on line 4-4 of Fig. 3, '50 Fig.5 is adetailed horizontal section on line 55 of Fig; 3,'

Fig. 6 is an enlarged vertical section on line of Fi 1,

Fig. 7 is an enlarged vertical transverse secv 5 5 tion of the chain andadjacent parts taken on line 1-1, Fig. 5, and

Fig. 8 is a view similar to a portion of Fig. 1 but showing amodification of the invention.

The whip roll and mounting therefor to be de scribed has been used inconnection with a let-off the general features of which are shown in myprior PatentNo. 2,103,821 as. modified by the structure shown in myprior Patent'No. 2,184,059, issued December 19, 1939, and suificientdescription will be given of the let-off to set forth one use for thewhip roll and its mounting. I do not wish to be limited in the practice"of my invention to the particular let-off with which it is shown hereinand it is to be understood that the let-off parts are given merely toillustrate one way in which the movable whiproll can be used to controlfeeding of the warp threads.

Referring to the drawings, particularly Figs. 1, 3 and 4, I have shown aloom frame 10 carrying a rearwardly projecting bracket I l to receivethe gudgeon l2 of a warp beam I3. A large gear l4 moving with the beammeshes with a smaller gear 15 on a fixed stud I 6. Fast with the gear I5is another gear I! meshing with a pinion I8 on a fixed stud l9. Anothergear fast with the pinion IS-meshes with pinion 2i fast on shaft 22 towhich is also fixed a star wheel 23. An escapement 24 having upper andlower teeth 25 and 26, respectively,for the star wheel oscillatesloosely about a fixed stud 27 and has a lower arcuate surface 28 toengage a pressure shoe 29 pivoted at 39 with respect to an escapementlever 3 l. The latter is movable about a fixed axis 32 and has a frontarm 33 through which passes loosely the lower end of a rod 34. Thelatter has a collar 35 secured thereto under arm 33 so that upwardmotion of rod 34 will rock the shoe 29 away from the arcuate face 28.'

A compression spring'35 surrounds the lower end of rod 34 and pressesagainst the arm 33 by action of a sleeve 31 loose on the rod and heldadjustably against the spring by a manually operated nut 38 threaded onthe rod 34. The latter is pivoted as at 39 to a pressure lever 40, seeFig. 4, movable vertically about a fixed pin 4|. A connector 42 attachesthe right end of lever 40' as viewed in Fig. 4 to a weight lever 43which rocks about a fixed stud 44. The pivotal. connection between theconnector 42 and the weight lever 43 is located between the stud 44 andthe outer or right end of lever 43 as viewed in Figs.

' 1 and 4 to which is attached an adjustable Weight 46. The axis of stud44 is horizontal so that lever 43 moves in a. vertical plane and theupper arm 41 thereof is attached to a connector rod 48 which extendsacross the loom.

The rod is pivotally connected to a plurality of forwardly extendingarms 5!) of bell crank levers 5| each movable in a horizontal planeabout a vertical pin 52 held in a bracket 53 supported by fixedstructure. As indicated in Fig. 1 this fixed structure may comprise aplurality of. webs 54 which form part of the loom frame as is customaryin wide looms. A bracing bar 55 may be secured to the loomsides andextends through.

and supports the webs 54. Each of the bell crank levers has a laterallyextending arm 56 to exert a.

rearward pressure on the whip roll designated generally at R. when thelatter is to be moved. rearwardly to compensate for 'warp slackening.When the whip roll is moved forwardly by increasing warp tension thearms 55 are also moved forwardly and rock their levers 5i to move therod 48 to the left as viewed in Fig. l, or away:

rollers 69.

- see Fig. 1, to rock lever 43 in a direction to lift weight 46. As theweight rises lever 40 is lifted to raise rod'34, thereby lowering shoe29 for the purpose of. releasing the arcuate surface 28. The escapement24 then oscillates as set forth more fully in my aforesaid patent andapplication to permit the warp beam [3 to move in a clockwise directionas viewed in Fig. 3 in response to the tension of the warp threads. Thisslackening of the tension of the warp threads permits a rearward motionof the whip roll R. induced by weight 46 acting through rod 48 and thelevers 54. The rearward motion of arms 56 1s transmitted to the whiproll by means to be described. During descent of the weight lever 43"rod 34 is lowered and a downward force exei'ted on arm 33 by spring 36and rocks lever 3|" to reestablish engagement between the arcuatesurface 28 and the shoe 29. When the pressure of the shoe preventsfurther rocking of the escapement the warp beam I3 is temporarily lockedin fixed 'angular position.

As previously stated, application bf a let-off of the type employing amovable whip roll to a wide loom having a large warp beam necessitatesprovisionfor mounting the whip roll so that it can. move as describedeven though located very close to thewarp beam. I haveset forth hereinone type of support for the ends of the whip roll and another type ofsupport for the intermediate portions thereof to illustratetwoconstructions by which the whip roll may be mounted for horizontalmotion. Since the supports for each end of the whip roll aresubstantially the same I will describe but one of them in detail,namely, that located at the let-off end of the. loom.

.In carrying into effect that part of my invention relating to the endroller bearings I provide a bracket 60 secured to each end of the loomframe. Since the bearings are the same at both ends I will describe butone. A bearing stand 62, bolted to bracket 60, see Figs,, 3 and 4, hasbolts 63 passing therethrough for holding a horizontal bearing 64 infixed position. This bearing may be formed as shown in sectionin Fig. 4and has an oil chamber 65 in which is located a pair of roller chains66. These chains may be of the usual type of roller chains and compriseside links 61 and cross bars 68 on, which are located The latter arefreeto turn on the cross bars and rollingly engage a rail 10, one :for eachchain, set into the horizontal stand 64 and held therein by screw-6i.The rails extend back and forth in the loom in the general direc-. tionin which the whip rollmoves. The ends of the chains are connectedtogether by a rod 1! which moves backwardly andforwardly with the chainsbetween front and back stops l2 and 13,

respectively, on bearing 64. -By the mechanism.

vjust described the chains are limited as to back and forth motion, ormotion to the left and right in Fig. 5. v

The whip roll has attached to the underside of the end thereof a foot 15with an arcuate plate 716 fastened to the end of. the whip roll by abolt 11. A second rail. 18' for each chain isqset into the underside ofthe foot I5 andprojects-into a chamber 19 formalin the foot. The rails18 are held to the foot by screws 80 similar to screws 6|. There is arail I9 above each rail I0 and the rollers 69 of the chains are locatedbetween the rails so that the weight at the end of the whip roll istransmitted from the foot through the rail I8 to the rollers 69 and fromthe latter to railIO.

By reason of the construction described in connection with the chains itwill -,be under stood that the foot 75 can move forwardly and backwardlyor to the right and left, respectively, in Fig. 3, with a minimum offriction because of the action of the rollers 69. -It is to beunderstood that each end of. the whip roll is provided with remote fromthe pin 86 is forked as at 90 and has passing therethrough a verticalpin 9| which also passes through the hub 92 of a second link 93. Thelink 93 has a second hub 94 which is located between the-verticallyspaced arms 95 and 96, respectively, of a carrier 91 having an arouatefoot 98 secured to the front curved surface of the whip roll asindicated in Fig. 3 at 99. The adjacent parts of the whip roll Rtherefore are supported from the stand 53 by reason of the links, andvertical pins, and the carrier.

Each carrier 91 is provided with a horizontally adjustable pressurescrew I00 which is in contact with the corresponding arm 56. By thisconnection pressure is transmitted from the rod 48 to the intermediateparts of the whip roll, while the links 89 and 93 support the centralportion of the whip roll for horizontal motion in response to themovements either permitted or caused by the levers; 5|. It will be seenby referring to Fig. 1 that I have indicated two of -the linksuspensions for the intermediate porfixed part of the loom frame.- Therolls may be concave as suggested in Fig. 2 and are so placed as toprevent sagging of the rod..48.

By referring to Fig. 7 it will be seen that the chain serves to preventlongitudinal or endwise motion of the whip roll. As shown in that figurethe chain-links 61 project beyond the rollers 69 so that they engagethetop and bottom rails I8 and I0, respectively. Any tendency ofthe'whip roll to move endwise will cause engagement between the top railand the links 91 which project below the roll. In thisway the chain andits links provide notonly a roller bearing but also limit endwise motionofnthe whip roll. The links 67 further serve the usual purpose ofkeeping the rollers spaced as shown-in Fig. 5.

The foregoing description has relatedto the .preferred. form of theinventionwhereinl use I thebell crank levers 5|, but if desired I mayomit these levers and provide the modified form set forthin Fig. 8. Inthat figure the whip roll R is provided witha series of carriers H5 toeach with'the lever 43 in a manner similar to rod 48.

In this modification the links H6 and I I9 to-.

gether-with the parts to which they are connected may be made in amanner similar to that set forth in Fig. 6 for the preferred form of theinvention, and it Will be understood that the pivots are vertical and ofsuficient strength to sup port the whip roll.

In operation, the whip roll will move back and forth as alreadydescribed in response to variations in warp tension. Assuming that thewhip roll is in the dotted line position shown in Fig. 3, the links 89and 93 of the preferred form of the invention will be at a relativelylarge angle to each other, and the shoe 15 at each end of the whip rollwill be moved to .a rear position. As warp is consumed the whip rollmoves forwardly to the full line position of Fig. 3, the links turningwith respect to each other around their common pivot 9| and the anglebetween them being reduced. At the same time the rail I8 rolls forwardlyover the tops of the rollers 69 and the latter roll along the bottomrail I0 at a rate substantially one-half that or" the advance movementof the whip roll. During this advance of the whip roll the rod 48 ismoved to the left as viewed in Fig. 1 to raise the weight 95. When theweight descends as already described the levers v5| will exert theirpressure on the'whip'i roll to move the same rearwardly and the links 89and'93 will spread and the rail '58 will slide rearwardly. The lever arm56 at each end of the whip roll engages a horn I on the adjacent foot I5which serves the same purpose as the pressure screws I00.

From the foregoing it will be seen that I have provided amounting for awhip roll so constructed as to permit the roll to be moved by the verythereof but also serve to prevent endwise movement of the whip roll aswill be understood from an inspection of Fig. .7. Furthermore, the barII causes the chains to-roll together over the rails and cooperates withstops I2 and I3 to limit end motion of the chains and thereby preventthe latter from becoming improperly placed with respect to the rails I0and 19. In the modified form of the invention the bell crank levers 5|are eliminated and the rod which is connected to the, let-off lever 03is connected directly to the links H6 and H9 for the purpose not only ofmoving the links positively to create backward and forward movements ofthe whip roll, but also to insure the samedegree of motion on each pairof links so that the whiproll will ha 'v'e a'parallel motionthroughoutits length. i

Having thusdescribed my invention itwill be seen that changes andmodifications maybe made therein by those skilled in the art withoutdeparting from the spirit and scope of the'in'vehtion and I do not wishto be limited to the details herein disclosed, but what I claim is: f

' 1. In a loom, a whip roll movable backwardly and forwardly in the loomin response'to variations in warp tension, a support fixed to the loom,a foot fixed to the whip roll, and a chain located between the foot andthe support and having roller links to engage the support on the foot,the latter rolling on the rollers as the whip roll moves back and forthand the rollers of the chain transmitting the pressure'of the whip rolland foot to the support.

2. In a loom, a whip roll movable backwardly andforwardly in the loom inresponse to variations in warp tension, a support'fixed to the loom andhaving a flange extending in'the direction of the back and forth motionof the whip roll, a foot secured to the whip roll and having a secondflange parallel to and above the first fiange, and a chain having rollerlinks between the flanges, the flange of the foot rolling on the rollerswhen the whip roll moves backwardly and forwardly and the rollerstransmitting the pressure of the whip roll and foot to the firstflangeon the support.

' 3. In a loom, a whip roll movable backwardly and forwardly therein inresponse to variations in warp tension, a stationary rail extendingtransversely of the Whip roll, a chain mounted on said rail and havingside links extending below the top of the rail and having alsotransverse rollers spaced apart from each other by the links, and asecond rail fixed with respect to the'whip roll and resting on therollers of the chain and'projecting below the tops of the links, thewhip roll and rail fixed with respectthereto rolling over the tops ofthe rollers of the chain and said rollers rolling along the fixed railwhen the whip roll moves backwardly and forwardly in the loom, and enagement between the rails and the side links of the chain limitingmotion of the whip roll in the direction of the length thereof.

lzIn a loom, a whip roll movable backwardly and forwardly in the horn inresponse to variations in warp tension, a stationary rail below thewhip'roll extending transversely of 'the latter, a chain having spacedrollers resting on the rail, a second rail above the first rail andhaving contact with the tops of the rollers, said second rail rolling onthe rollers and the latter rolling on the first rail when the whip rollmoves backwardly and forwardly in the loom, and means to limit motion ofthe chain with respect to the first named rail.

5. In 'a loom, a fixed support on the 100111, a whip roll to be movedhorizontally in response to variations in warp tension, a plurality ofsupporting connections between the fixed support and whip roll, eachconnection comprising jointed normally oblique members one of which ispivoted to the fixed support and the other of which is pivotallyconnected to the whip roll, and an equalizer connected to the supportingconnections to cause the members of each supporting connection to havethe same angular relation 'as the members of the remaining supportingconnections.

6. In a loom, a fixed support on the loom, a whip roll to be movedhorizontally in response to variations in warp tension, a plurality ofsupporting connections between the fixed support and whip roll, eachconnection comprising jointed normally oblique members one of which ispivoted to the fixed support and the other of which is pivotallyconnected to the whip roll, the members of each connection being pivotedtogether and moving angularly with respect to each other when the whiproll moves toward or from the fixed support, and an equalizer attachedto the connections to cause the latter to impart equal movements to thewhip roll.

'7. In a loom, a fixed support on the loom, a whip roll to be movedhorizontally in response to variations in warp tension, a plurality ofsupporting connections between the fixed support and whip roll, eachconnection comprising jointed normally oblique members one of which ispivoted to the fixed support and the other of which is,

pivotally connected to the whip roll, the members of each connectionmoving angularly with respect to each other when the whip roll movestoward or from the fixed support, and an equalizer extending parallel tothe whip roll and attached to the connections to cause the latter toimpart equal movements to the whip roll when the equalizer moves in adirection parallel to the whip roll. I

8. In a loom, a fixed support on the loom, a whip roll to be movedhorizontally in response to variations in the warp tension, a pluralityof pairs of supporting links, one link of each pair connected pivotallyto the fixed support and the other link of each pair connected pivotallywith respect to the whip roll, a pivotal connection between the links ofeach pair, and an equalizer connected to the pivotal connections betweenthe links to cause the links of the pairs to have the same amount ofrelative angular motion when the equalizer is moved.

9. In a loom, a fixed support on the loom, a whip roll to be movedhorizontally in response to variations in the warp tension, a pluralityof pairs of supporting links, one link of each pair connected pivotallyto the fixed support and the other link of each pair connected pivotallywith respect to the whip roll, a pivotal connection between the links ofeach pair, and an equalizer comprising a rod parallel to the whip rolland connected to the pivotal connections between the links to cause thelinks of the pairs to have the same amount of relative angular motionwhen the equalizer is moved.

10. In a loom, a whip roll movable backwardly and forwardly in the loomin response to variations in warp tension, a pair of parallel spacedfixed rails extending in the direction in which the whip roll moves, achain including spaced rollers on each rail, a foot on the whip roll, apair of rails on the foot, one rail over each of the fixed rails, saidrails resting on the rollers of the chain, connecting means to cause thechains to move in unison along the fixed rails, and stop meanscooperating with said connecting means to limit motion of the chainsalong the rails.

11. In a loom having a whip roll extending across the loom and overwhich a sheet of Warp extends toward the front of the loom, the loomhaving a support for each end of the whip roll with respect to which theroll moves horizontally in response to variations in warp tension, thatimprovement comprising an intermediate support for the 'whip roll infront of the latter and under the warp sheet and including a pair ofjointed links one of which is supported for horizontal pivotal motionwith respect to the loom and the other link of which is supported forhorizontal pivotal motion by the first link, and a supporting pivotalconnection between the said other link and an intermediate part of thewhip roll, the links moving horizontally with and supporting theintermediate part of the'whip roll as the latter moves horizontally.

12. In a loom having a whip roll extending across the loom and overwhich a sheet of warp extends toward the front of the loom, the loomhaving a support for each end of the whip roll with respect to which theroll moves horizontally in response to variations in warp tension, thatimprovement comprising a horizontal whip roll supporting link supportedbyand movable pivotally with respect tothe loom under the warp sheet andin a'horizontal plane, a second whip roll supporting link connected tothe whip roll and movable horizontally under the warp sheet, and avertical pivotal connection between the links by which the first linksupports the second link, the links moving horizontally with and supporting the whip roll as the latter moves horizontally.

13. In a loom having a whip roll extending across the loom and overwhich a sheet of warp extends toward the front of the loom, the loomhaving a support for each end of the whip roll with respect to which theroll moves horizontally in response to variations in warp tension, thatimprovement comprising a pair of links, a vertical pivotal connectionbetween the links by which one link supports the other link, one end ofsaid one link supported by and pivotally mounted for horizontal swingingrelatively to the loom, and a vertical pivotal connection between theother link and an intermediate part of the whip roll between the endsthereof, said links located under the warp sheet and in front of thewhip roll and said links moving horizontally with and supporting theintermediate part of the whip roll as the latter moves horizontally.

' roll in front of the latter andbetween the warp sheet and the beam,said support including a pair of jointed links one of which is supportedfor horizontal pivotal motion with respect to the loom and the otherlink of which is supported for horizontal pivotal motion on and withrespect to the first link, and a supporting pivotal connection betweenthe said other link and an intermediate part of the whip roll, the linksmoving in the space under the warp sheet horizontally with andsupporting the intermediate part of the whip roll as the latter moveshorizontally.

15. In'a loom having a whip roll movable horizontally in response tovariations in the tension of a sheet of warp extending over the Whiproll and forwardly therefrom, a'stationary support forming part of theloom structure, a horizontal link, a pivotal connection between one endof the link and the support to hold the link against downwarddisplacement and around which the link moves pivotally, a second link, apivotal connection between the other end of the first named link and oneend of the second'link to prevent downward displacement of the secondlink relatively to the first link and around which the second link turnswith respect to the first link, and a supporting connection between theother end of the second link and the whip roll, said links normallybeing angularly disposed with respect to each other and movablehorizontally with respect to each other and the support duringhorizontal motion of the whip roll to support the latter againstdownward displacement.

OSCAR V. PAYNE.

